From e6050fc1b457e749ca4cd5d4d4368b527f70c38a Mon Sep 17 00:00:00 2001 From: Pierre du Plessis Date: Tue, 5 May 2020 12:03:10 +0200 Subject: [PATCH] Add support for arrow keys in QuestionHelper --- src/Symfony/Component/Console/Cursor.php | 4 + .../Console/Helper/QuestionHelper.php | 78 ++++++++++++++++++- 2 files changed, 79 insertions(+), 3 deletions(-) diff --git a/src/Symfony/Component/Console/Cursor.php b/src/Symfony/Component/Console/Cursor.php index 9f8be9649c522..9cedffe0033f3 100644 --- a/src/Symfony/Component/Console/Cursor.php +++ b/src/Symfony/Component/Console/Cursor.php @@ -163,6 +163,10 @@ public function getCurrentPosition(): array sscanf($code, "\033[%d;%dR", $row, $col); + if (null === $row && null === $col) { + sscanf($code, "~\033[%d;%dR", $row, $col); + } + return [$col, $row]; } } diff --git a/src/Symfony/Component/Console/Helper/QuestionHelper.php b/src/Symfony/Component/Console/Helper/QuestionHelper.php index f2583190da6e5..6386d9ec798ab 100644 --- a/src/Symfony/Component/Console/Helper/QuestionHelper.php +++ b/src/Symfony/Component/Console/Helper/QuestionHelper.php @@ -109,6 +109,8 @@ private function doAsk(OutputInterface $output, Question $question) $inputStream = $this->inputStream ?: STDIN; $autocomplete = $question->getAutocompleterCallback(); + $cursor = new Cursor($output); + if (null === $autocomplete || !Terminal::hasSttyAvailable()) { $ret = false; if ($question->isHidden()) { @@ -123,10 +125,80 @@ private function doAsk(OutputInterface $output, Question $question) } if (false === $ret) { - $ret = fgets($inputStream, 4096); - if (false === $ret) { - throw new MissingInputException('Aborted.'); + if (!Terminal::hasSttyAvailable()) { + $ret = fgets($inputStream, 4096); + if (false === $ret) { + throw new MissingInputException('Aborted.'); + } + } else { + $sttyMode = shell_exec('stty -g'); + + shell_exec('stty -icanon -echo'); + + $k = null; + $string = ''; + + [$x] = $cursor->getCurrentPosition(); + + while (10 !== $k && 0 !== $k) { + [$pos] = $cursor->getCurrentPosition(); + $pos -= $x; + + $ret = fgetc($inputStream); + if (false === $ret && '' === $string) { + shell_exec(sprintf('stty %s', $sttyMode)); + throw new MissingInputException('Aborted.'); + } + + $k = \ord($ret); + + if (27 === $k) { + fgetc($inputStream); + $k = \ord(fgetc($inputStream)); + + switch (true) { + case 67 === $k && $pos < self::strlen($string): + $cursor->moveRight(); + break; + case 68 === $k && $pos > 0: + $cursor->moveLeft(); + break; + case 51 === $k && $pos >= 0: + $string = self::substr($string, 0, $pos).self::substr($string, $pos + 1); + $cursor->clearLineAfter(); + $output->write(self::substr($string, $pos)); + $cursor->moveToColumn($pos + $x); + break; + } + } elseif (127 === $k) { + if ($pos > 0) { + $string = self::substr($string, 0, $pos - 1).self::substr($string, $pos); + + $cursor->moveToColumn($x); + $output->write($string); + $cursor->clearLineAfter() + ->moveToColumn(($pos + $x) - 1); + } + } elseif ($k >= 32 && $k <= 126) { + if ($pos > 0 && $pos < \strlen($string)) { + $string = self::substr($string, 0, $pos).$ret.self::substr($string, $pos); + $output->write($ret.self::substr($string, $pos + 1)); + $cursor->clearLineAfter() + ->moveToColumn($pos + $x + 1); + } else { + $string .= $ret; + $output->write($ret); + } + } else { + $output->write($ret); + } + } + + shell_exec(sprintf('stty %s', $sttyMode)); + + $ret = $string; } + if ($question->isTrimmable()) { $ret = trim($ret); } pFad - Phonifier reborn

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